Officially called Space Bins, the larger overhead bins have a similar look and feel to the overhead storage bins currently in use; yet they hold up to 48 percent more bags — or as many as 174 standard carry-on bags as opposed to the current capacity of 117 of those bags. They can even store items which would usually not fit in a typical overhead storage bin — such as a guitar.

When open, the bottom edge of the overhead storage bin hangs approximately 2 inches lower, which means that passengers do not need to lift their bags as high to load them. The deeper bins allow more bags to be stowed; and let customers load overstuffed bags with less struggle — which purportedly will reduce boarding times while improving on-time performance and require less intervention from flight attendants.